Different eras of dance and costume were on display for Monday night’s episode of ABC’s popular Dancing With The Stars, and RadarOnline.com was there to chat it up with all the dancers and celebs about their time-warping performances.

Kelly Osbourne was born in 1984, but it didn’t stop her from channeling her inner go-go-girl for a groovy, 60s-inspired performance of Ike and Tina Turner’s River Deep Mountain High.

“We had so much fun tonight,” Osbourne told our Tina Malave. “My feet are killing me, my legs are killing me, but it was worth it.”

Joanna Krupa, who partnered with Derek Hough to do a futuristic rendition of the paso doble, said learning the robotic movements for their number was unnaturally difficult. Donny Osmond, dressed in a Michael Jackson-esque 80s ensemble, Kym Johnson, seemed a little more comfortable doing a paso doble tribute to the decade of excess set to Dead Or Alive’s You Spin Me Around (Like a Record).